Where have all the cush drives gone? Notice how many wheels are for sale without them? I have also noticed that there are a lot of vintage Yamaha TZ rear wheels out there, but they did not originally use a cush drive; the sprocket was bolted directly to the wheel. Later (I am not an expert; 1990s?) it was moved to the wheel. These repro parts, from Vince at FONDSECA in the UK, can be put on those Campy, Marvic, and Tecno mags of the 1980s with the five-bolt pattern and 74mm raised bearing hub. Get a Yammy rear sprocket and fiddle around with these parts, and you are good to go. They are slightly thinner that the first version, so a small recess 74mm wide will have to be machined into the back to fit the bearing hub, and a thin spacer plate installed to make up the difference at the hub (or, machine down the hub a few mm). As usual, you will have to deal with sprocket offsets and centering the wheel. And you will need to make an axle bush/spacer for the center of the outer bearing to keep all in place. MikeV
11/15/17: Five photos at bottom added for Lou. First two are on older version of the cush plate, and then the new version in last three.
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